CREATE TABLE "table1_2596811_12" (
  "unit" text,
  "commander" text,
  "complement" text,
  "killed" text,
  "wounded" text,
  "missing" text
);

Question: What was the complement for the unit that had 3 off 37 men killed?
SQL: SELECT "complement" FROM "table1_2596811_12" WHERE "killed"='3 off 37 men';

Question: What is the number of wounded figures associated with a complement of 22 off 637 men?
SQL: SELECT COUNT("wounded") FROM "table1_2596811_12" WHERE "complement"='22 off 637 men';

Question: What is the number of commanders that had 0 off 63 men killed?
SQL: SELECT COUNT("commander") FROM "table1_2596811_12" WHERE "killed"='0 off 63 men';

Question: What was the complement associated with 0 off 3 men killed and 0 off 2 men wounded?
SQL: SELECT "complement" FROM "table1_2596811_12" WHERE "killed"='0 off 3 men' AND "wounded"='0 off 2 men';