R 291355Z OCT 25 MARADMIN 509/25 MSGID/GENADMIN/CG EDCOM PRES MCU QUANTICO VA// SUBJ/CHANGE 1 TO THE FISCAL YEAR 2026 CLASS DATES FOR CORNERSTONE// REF/A/MSGID:MSG/CMC/191700Z AUG 25// NARR/REF A IS MARADMIN 423/25, FISCAL YEAR 2026 CLASS DATES FOR  CORNERSTONE: THE COMMANDANT’S COMBINED COMMANDERSHIP COURSE.// POC/MAJ ADAM J. FRANKLIN/LEJEUNE LEADERSHIP INSTITUTE/MCU/TEL: COMM  (703) 432-4675/EMAIL: [email protected]// POC/DR. DAVID WALKER/LEJEUNE LEADERSHIP INSTITUTE/MCU/TEL: COMM (703) 432-4684 /EMAIL: [email protected]// GENTEXT/REMARKS/

1.  This MARADMIN updates reference (a) to announce changes to the  Fiscal Year 2026 Cornerstone schedule.
2.  Cornerstone 26-1 (previously scheduled for 15–24 October 2025)  was cancelled due to a lapse in appropriations. To preserve  throughout and ensure all selected commanders and command senior  enlisted leaders can attend, an additional spring iteration  Cornerstone 26-3, has been added to the FY26 schedule.
3.  Revised Course Dates: 3.A.  Cornerstone 3.A.1. O5-level Commanders and Sergeants Major: Course          Report Date     Convene Date    Grad Date 2026002         17 Mar 26       18 Mar 26       27 Mar 26 2026003          5 May 26        6 May 26       15 May 26 3.A.2. O6-level Commanders and Sergeants Major: Course          Report Date     Convene Date    Grad Date 2026002         22 Mar 26       23 Mar 26       27 Mar 26 2026003         10 May 26       11 May 26       15 May 26 3.B. Spouses Workshop Course          Report Date     Convene Date    Grad Date 2026002         22 Mar 26       23 Mar 26       27 Mar 26 2026003         10 May 26       11 May 26       15 May 26
4.  Registration procedures, eligibility criteria, and administrative  requirements remain as published in reference (a). Attendees  previously assigned to 26-1 must complete the registration form at  https://forms.office.com/r/kvk7Pq493Q to register for a future  iteration. 
5.  Recruiting Station Commanding Officers may attend Cornerstone  prior to assuming command if approved by their parent command.  Attendance following assumption of command is not authorized.
6.  Questions regarding registration or eligibility should be directed  to the MCU points of contact listed above. Questions regarding CSEL  attendance should be directed to the 8999 Programs Lead, Marine Corps  Senior Enlisted Academy, Sergeant Major Jacqueline Townsel, at  [email protected] or (703) 432-3224.
7.  Release authorized by Brigadier General Matthew W. Tracy,  Commanding General, Education Command and President, Marine Corps  University//