Rate of fire is 1 round per x seconds. Duration is in rounds, or minutes if m suffix. US 60mm M2 mortar onmap Mission: Harass | Light | Medium | Heavy Rate of fire: 18 | 6 | 3 | 2 Duration: Q S M | Q S M | Q S M | Q S M Rounds: 6 7 7m | 3 20 30 | 3 19 24 | 3 16 US 81mm M1 mortar onmap Mission: Harass | Light | Medium | Heavy Rate of fire: 18 | 6 | 3 | 2 Duration: Q S M | Q S M | Q S M | Q S M Rounds: 5 10 15 | 6 10 28 | 3 10 25 | 6 12 22+ US 105mm M2A1 Howitzer Mission: Harass | Light | Medium | Heavy Rate of fire: 46-48 | 28-32 | 16-19 | 10-12 Duration: Q S M | Q S M | Q S M | Q S M Rounds: 3 6 14 | 2 7 12 | 3 6 12 | 2 6 12
Credit to Martin Krejcirik