Deutsche Bank AG
Taunusanlage 12, D-60325
Frankfurt am Main
Federal Republic of Germany



Jeffrey A. Ruiz
Vice President
Telephone: (212) 250-3667


                                                               February 06, 2006

Securities and Exchange Commission
SEC Document Control
450 Fifth Street, N.W.
Washington, DC  20549
Attn:  Filing Desk


Dear Sir or Madame:

         Re:  Filing of Schedule 13G - Brandywine Realty Trust



 Pursuant to Rule 13d-1 of the Securities Exchange Act of 1934, attached is one
 copy of Schedule 13G with respect to the common stock of the above referenced
 corporation.

Please acknowledge your receipt of the Schedule 13G by return e-mail
confirmation.

                                                                 Sincerely,



                                                                 Jeffrey A. Ruiz









Enclosures



                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13G

                    Under the Securities Exchange Act of 1934

                             Brandywine Realty Trust
                     ---------------------------------------
                                 NAME OF ISSUER:

                                  Common Stock
                     ---------------------------------------
                          TITLE OF CLASS OF SECURITIES

                                    105368203
                     ---------------------------------------
                                  CUSIP NUMBER

                                December 30, 2005
                     ---------------------------------------
             (Date of Event Which Requires Filing of this Statement)


     Check the appropriate box to designate the rule pursuant to which this
                               Schedule is filed:

                                [X] Rule 13d-1(b)

                                [ ] Rule 13d-1(c)

                                [ ] Rule 13d-1(d)










1. NAME OF REPORTING PERSONS
   S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

         Deutsche Bank AG*

2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
        (A) [ ]
        (B) [ ]

3. SEC USE ONLY

4. CITIZENSHIP OR PLACE OF ORGANIZATION

    Federal Republic of Germany

NUMBER OF         5.       SOLE VOTING POWER
SHARES                     4,437,460
BENEFICIALLY      6.       SHARED VOTING POWER
OWNED BY                   0
EACH              7.       SOLE DISPOSITIVE POWER
REPORTING                  4,565,160
PERSON WITH       8.       SHARED DISPOSITIVE POWER
                           4,565,160

9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         4,565,160


10.CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN SHARES [ ]

11.PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

         8.13%

12. TYPE OF REPORTING PERSON

         BK, HC, CO



     * In accordance with Securities Exchange Act Release No. 39538 (January 12,
     1998), this amended filing reflects the securities beneficially owned by
     the Private Clients and Asset Management business group ("PCAM") of
     Deutsche Bank AG and its subsidiaries and affiliates (collectively,
     "DBAG"). This filing does not reflect securities, if any, beneficially
     owned by any other business group of DBAG. Consistent with Rule 13d-4 under
     the Securities Exchange Act of 1934 ("Act"), this filing shall not be
     construed as an admission that PCAM is, for purposes of Section 13(d) under
     the Act, the beneficial owner of any securities covered by the filing.



1. NAME OF REPORTING PERSONS
   S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

         RREEF America, L.L.C.

2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

          (A) [ ]
          (B) [ ]


3. SEC USE ONLY


4. CITIZENSHIP OR PLACE OF ORGANIZATION

    Delaware

NUMBER OF         5.       SOLE VOTING POWER
SHARES                     4,413,060
BENEFICIALLY      6.       SHARED VOTING POWER
OWNED BY                   0
EACH              7.       SOLE DISPOSITIVE POWER
REPORTING                  4,413,060
PERSON WITH       8.       SHARED DISPOSITIVE POWER
                           0

9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         4,413,060

10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN SHARES [ ]

11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

         7.86%

12. TYPE OF REPORTING PERSON

         IA, CO










1. NAME OF REPORTING PERSONS
   S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

         Deutsche Asset Management Inc.

2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

          (A) [ ]
          (B) [ ]


3. SEC USE ONLY


4. CITIZENSHIP OR PLACE OF ORGANIZATION

    Delaware

NUMBER OF         5.       SOLE VOTING POWER
SHARES                     0
BENEFICIALLY      6.       SHARED VOTING POWER
OWNED BY                   0
EACH              7.       SOLE DISPOSITIVE POWER
REPORTING                  46,200
PERSON WITH       8.       SHARED DISPOSITIVE POWER
                           0

9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         46,200

10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN SHARES [ ]

11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

         0.08%

12. TYPE OF REPORTING PERSON

         IA, CO








1. NAME OF REPORTING PERSONS
   S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

         Deutsche Investment Management Americas

2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

          (A) [ ]
          (B) [ ]


3. SEC USE ONLY


4. CITIZENSHIP OR PLACE OF ORGANIZATION

    Delaware

NUMBER OF         5.       SOLE VOTING POWER
SHARES                     0
BENEFICIALLY      6.       SHARED VOTING POWER
OWNED BY                   0
EACH              7.       SOLE DISPOSITIVE POWER
REPORTING                  81,500
PERSON WITH       8.       SHARED DISPOSITIVE POWER
                           0

9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         81,500

10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN SHARES [ ]

11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

         0.15%

12. TYPE OF REPORTING PERSON

         IA, CO










1. NAME OF REPORTING PERSONS
    S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

         DWS Holding & Service GmbH

2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

          (A) [ ]
          (B) [ ]


3. SEC USE ONLY


4. CITIZENSHIP OR PLACE OF ORGANIZATION

   Germany

NUMBER OF         5.       SOLE VOTING POWER
SHARES                     24,400
BENEFICIALLY      6.       SHARED VOTING POWER
OWNED BY                   0
EACH              7.       SOLE DISPOSITIVE POWER
REPORTING                  24,400
PERSON WITH       8.       SHARED DISPOSITIVE POWER
                           0

9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         24,400

10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN SHARES [ ]

11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

         0.04%

12. TYPE OF REPORTING PERSON

         IA, CO











Item 1(a).        Name of Issuer:

                  Brandywine Realty Trust. (the "Issuer")

Item 1(b).        Address of Issuer's Principal Executive Offices:

                  401 Plymouth Road
                  Plymouth Meeting, PA 19462

Item 2(a).        Name of Person Filing:

                  This statement is filed on behalf of Deutsche Bank AG,
                  ("Reporting Person").

Item 2(b).        Address of Principal Business Office or, if none, Residence:

                  Taunusanlage 12, D-60325
                  Frankfurt am Main
                  Federal Republic of Germany

Item 2(c).        Citizenship:

                  The citizenship of the Reporting Person is set forth on the
                  cover page.

Item 2(d).        Title of Class of Securities:

                  The title of the securities is common stock, ("Common Stock").

Item 2(e).        CUSIP Number:

                  The CUSIP number of the Common Stock is set forth on the cover
                  page.

Item 3.          If this statement is filed pursuant to Rules 13d-1(b), or
                 13d-2(b) or (c), check whether the person filing is a:

                 (a) [ ] Broker or dealer registered under section 15 of the
                         Act;

                 (b) [ ] Bank as defined in section 3(a)(6) of the Act;

                 (c) [ ] Insurance Company as defined in section
                         3(a)(19) of the Act;

                 (d)[  ] Investment Company registered under section 8 of the
                         Investment Company Act of 1940;


                 (e) [X] An investment adviser in accordance with Rule
                         13d-1(b)(1)(ii)(E);

                         RREEF America, L.L.C.

                         Deutsche Asset Management Inc.

                         DWS Holding & Service GmBH

                         Deutsch Investment Management Americas

                 (f) [ ] An employee benefit plan, or endowment fund in
                         accordance with Rule 13d-1 (b)(1)(ii)(F);

                 (g) [X] parent holding company or control person in
                         accordance with Rule 13d-1 (b)(1)(ii)(G);

                         Deutsche Bank AG

                 (h) [ ] A savings association as defined in section
                         3(b) of the Federal Deposit Insurance Act;

                 (i) [ ] A church plan that is excluded from the
                         definition of an investment company under section
                         3(c)(14) of the Investment Company Act of 1940;

                 (j) [ ] Group, in accordance with Rule 13d-1
                         (b)(1)(ii)(J).


Item 4.           Ownership.

                (a) Amount beneficially owned:

                      The Reporting Person owns the amount of the Common Stock
                      as set forth on the cover page.

                (b)   Percent of class:

                      The Reporting Person owns the percentage of the Common
                      Stock as set forth on the cover page.

                (c) Number of shares as to which such person has:



                           (i) sole power to vote or to direct the vote:

                           The Reporting Person has the sole power to vote or
                           direct the vote of the Common Stock as set forth on
                           the cover page.

                           (ii) shared power to vote or to direct the vote:

                           The Reporting Person has the shared power to vote or
                           direct the vote of the Common Stock as set forth on
                           the cover page.

                           (iii) sole power to dispose or to direct the
                           disposition of:

                           The Reporting Person has the sole power to dispose or
                           direct the disposition of the Common Stock as set
                           forth on the cover page.

                           (iv) shared power to dispose or to direct the
                           disposition of:

                           The Reporting Person has the shared power to dispose
                           or direct the disposition of the Common Stock as set
                           forth on the cover page.

Item 5.           Ownership of Five Percent or Less of a Class.

                                 Not applicable.


Item 6.           Ownership of More than Five Percent on Behalf of Another
                  Person.

                                 Not applicable.

Item 7.           Identification and Classification of the Subsidiary Which
                  Acquired the Security Being Reported on by the Parent Holding
                  Company.

                  Subsidiary Item 3                           Classification

                   RREEF America, L.L.C.                     Investment Advisor

                   Deutsche Asset Management Inc.            Investment Advisor

                   DWS Holding & Service GmBH                Investment Advisor

                   Deutsch Investment Management Americas    Investment Advisor

Item 8.           Identification and Classification of Members of the Group.
                                 Not applicable.

Item 9.           Notice of Dissolution of Group.

                                 Not applicable.






Item 10.        Certification.

By signing below I certify that, to the best of my knowledge and belief, the
securities referred to above were acquired and are held in the ordinary course
of business and were not acquired and are not held for the purpose of or with
the effect of changing or influencing the control of the issuer of the
securities and were not acquired and are not held in connection with or as a
participant in any transaction having that purpose or effect.






                                SIGNATURE

                  After reasonable inquiry and to the best of my knowledge and
belief, I certify that the information set forth in this statement is true,
complete and correct.

Dated: 2/06/06


                                                         DEUTSCHE BANK AG


                                                       By: /s/ Jeffrey A. Ruiz
                                                       Name: Jeffrey A. Ruiz
                                                       Title: Vice President

                                                       By: /s/ Pasquale Antolino
                                                       Name: Pasquale Antolino
                                                       Title: Associate

























                              SIGNATURE

                  After reasonable inquiry and to the best of my knowledge and
belief, I certify that the information set forth in this statement is true,
complete and correct.

Dated: 2/06/06


                                                        RREEF America, L.L.C.

                                                        By: /s/ Peter Pages
                                                        Name: Peter Pages
                                                        Title:  Vice President









































                                   SIGNATURE

                  After reasonable inquiry and to the best of my knowledge and
belief, I certify that the information set forth in this statement is true,
complete and correct.

Dated: 2/06/06


                                                 Deutsche Asset Management Inc.

                                                         By: /s/ Jeffrey A. Ruiz
                                                           Name: Jeffrey A. Ruiz
                                                          Title:  Vice President








































                                      SIGNATURE

                  After reasonable inquiry and to the best of my knowledge and
belief, I certify that the information set forth in this statement is true,
complete and correct.

Dated: 2/06/06


                                Deutsche Investment Management Americas Inc.

                                                         By: /s/ Jeffrey A. Ruiz
                                                           Name: Jeffrey A. Ruiz
                                                          Title:  Vice President




























                                      SIGNATURE

                  After reasonable inquiry and to the best of my knowledge and
belief, I certify that the information set forth in this statement is true,
complete and correct.

Dated: 2/06/06


                                                      DWS Holding & Service GmbH

                                                            By: /s/ Susan Seidel
                                                              Name: Susan Seidel
                                                          Title:  Vice President