Minecraft wiki entry for Raid_captain, associated text: 0–2 arrows, dropping more with the presence of Looting, up to 5‌[Bedrock Edition only].
Its crossbow (may be loaded or unloaded), which has an 8.5% chance to be dropped (9.5% with Looting I, 10.5% with Looting II and 11.5% with Looting III). It has a random durability and may be enchanted.