If you’re still using a paper field manual, congrats – you’re the reason we lose wars. Fix yourself. Buy an indestructible all-weather THULS book. And, stop sucking at machine guns and mortars.
Mortar 120MM handbook covers: Organization and duties, cannon assembly, bipod assembly, M9A1 baseplate, operation & pre-mount checks, placing ground mount into action, safety checks before firing, small deflection and elevation changes, large deflection and elevation changes, referring of the sight, realignment of aiming posts, loading & firing ground mounted, taking out of action, M326 stowage kit operations, mortar squad seating, emplacing the M150 / M326 kit, power mode, manual mode, power & manual mode, emplacing electronic rack, displacing the M150 / M326 kit, stowage mount, loading mortar onto vehicle, power mode, manual mode, power & manual mode, displacing electronic rack