They have to replace all casualties, which include not just those dead but also injured and captured soldiers.

Bread is made from wheat

He’s referencing something Alonso said in 2005 after his move on Schumacher into 130 R (Suzuka). There Alonso said he knew Schumacher would brake first because has a wife and kids at home.

It’s referencing the chorus from Delilah by Tom Jones

It’s probably a reference to TIE fighters