Where did they go? Pre-war players who reappeared

[packs]

I've noticed that there are a number of pre-war players who seemingly disappeared for a while during their active careers only to briefly reappear later. Some of the more common examples with explanations would be:

Dizzy Dean: his career ended in 1941, then 6 years later he made one start for the Browns after he commented on how terrible they were.

Satchel Paige: his career ended in 1953 but he later reappeared in 1965 to throw three innings for the A's as a publicity stunt.

But what about some others?

Babe Herman's career was over in 1937 but then he managed to reappear and play 37 games for the Dodgers 5 years later in 1942.

Jimmie Foxx missed two seasons between 1942 and 1944 as well, but not due to service.

Gabby Street's career ended in 1912 but then he later reappeared for one game in 1931.

Anyone know the stories behind these gaps? Or other players with similar distances in their careers?