The “Abraham Lincoln Brigade” was a very small part of the foreign involvement in the Spanish Civil War. Most of the Brigade members were European leftist.
In addition to the International Brigade, the Soviet Union sent arms and “volunteers”, pilots and ground troops.
Mexico provided $2,000,000 plus 20,000 rifles and 8 pieces of artillery. The Mexicans also provided ground troops. (Although the exact number is difficult to find and historically the combat effectiveness of Mexican troops has been... well...)
“The “Abraham Lincoln Brigade” was a very small part of the foreign involvement in the Spanish Civil War.”
Yes, I know, but as they were American leftists, their treachery especially should not be forgotten by us.