What method did the US military use to interrogate prisoners back in WWll?

Back then, they would give them a cup of coffee, some muffins, and just say please tell us what you know and all those prisoners just coughed up the information. That's pretty much how the liberals want to do it now. Oh, wait. Damn, I'm sorry, that didn't happen in WWII, I wasn't around then but I"m pretty sure that on more than one occasion a Colt .45 was ****** and placed in the mouth of a prisoner. I know it was done during Viet Nam, I was there and saw the South Koreans and the South Vietnamese do it. It was amazing how much information comes out through the barrell of a .45. By the way, that was while Lyndon B. Johnson was President and the Congress was run by the Democrats and it was no secret that this was being done among other things.