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

Question: What was the number of Personal Staff Units Killed?
SQL: SELECT "killed" FROM "head_quarters_and_support_regiments" WHERE "unit"='personal staff';

Question: What was the Complement of Artillery Corps Units that had 0 off 0 men Killed or Wounded?
SQL: SELECT "complement" FROM "head_quarters_and_support_regiments" WHERE "killed"='0 off 0 men' AND "wounded"='0 off 0 men' AND "unit"='artillery corps';

Question: How many were Wounded while in a Unit with a Complement of 83 off 9 Men?
SQL: SELECT "wounded" FROM "head_quarters_and_support_regiments" WHERE "complement"='83 off 9 men';

Question: How many of the Royal Waggon Train Unit were Missing while having a Killed of 0 off 0 men and a Wounded of 0 off 0 men?
SQL: SELECT "missing" FROM "head_quarters_and_support_regiments" WHERE "killed"='0 off 0 men' AND "wounded"='0 off 0 men' AND "unit"='royal waggon train';

Question: How many were Wounded in the Artillery Corps unit while having 0 off 0 men Killed?
SQL: SELECT "wounded" FROM "head_quarters_and_support_regiments" WHERE "killed"='0 off 0 men' AND "unit"='artillery corps';