When Baden-Powell returned to the US in 1919, the BSA held a huge rally in Central Park, and later a rally for the return of General John J. Pershing. During the war, it was noted that troops tended to fold if the Scoutmaster was called for service. Changes in the troop structure included limiting the size to 32 Scouts, the introduction of the troop committee and the senior patrol leader position. The Associate Scout, Veteran Scout and Pioneer Scout programs were introduced for Scouts with loose or no troop affiliation. Select paid commissioners in first class councils started to become the first Scout executives and an early professional development program was implemented. Theodore Roosevelt died in January 1919, Dan Beard lead a pilgrimage of Scouts to the grave in October in what became an annual event.