CREATE TABLE table_26133 ("Type of unit" TEXT, "Type of aircraft" TEXT, "Number of aircraft" TEXT, "Number of crews" TEXT, "Men per crew" TEXT, "Total personnel" FLOAT, "Officers" FLOAT, "Enlisted" FLOAT)

Name the number of crews for light bombardment group
SELECT "Number of crews" FROM table_26133 WHERE "Type of unit" = 'Light bombardment group'
SELECT "Number of crews" FROM "table_26133" WHERE "Type of unit" = 'Light bombardment group'