He was considered too old for military service at the start of the war, and he was already a major Hollywood star. He did, however, support the war effort by:
* Making war-themed films: Grant appeared in several films during the war, including "Destination Tokyo" (1943) and "Once Upon a Time" (1944), which contributed to the national morale.
* Selling war bonds: He participated in numerous war bond drives, encouraging people to contribute to the war effort.
* Entertaining troops: Grant visited troops stationed in the United States and abroad, boosting their spirits through performances and meet-and-greets.
While he didn't fight on the front lines, Cary Grant did play a significant role in supporting the war effort during World War II.