Tiny Tims on the F4Us, as well (and yes, 1s and 1As were later given the capability to fire them from their centerline hardpoints).
Probably about as often as any other aircraft provisioned to launch them.
Although the 5 inch rockets used by the Navy and Marines were effective, something was needed to destroy the heavily fortified Japanese positions and even warships in the Pacific. The "Tiny Tim" was basically an up-scaled HVAR rocket, designed at Cal-Tech, and ready for deployment in December 1944. The only record of the rockets being used in combat occur at the bloody Battle of Okinawa towards the end of the war. Getting hit by this rocket was the equivalent of a 12 Inch naval shell, and it's destructive power was impressive enough for the "Tiny "Tim" to serve long after the war was over.
