| Year | 1933 |
| Weapon Type | Heavy Infantry Gun |
| Origin & Designer | Germany/Rheinmetall |
| Numbers Produced | 4.565 |
| Crew | Gun Commander Gunner (Sights) Gunner (Breech Operator) Gunner (Elevation) Loader 2 x Ammunition Bearers |
| Calibre | 149.1mm |
| Elevation | -0° to +73° |
| Traverse | 11.5° |
| Breech | Horizontal Sliding Wedge |
| Recoil | Hydropneumatic |
| Gun Sight | Rbl.F.36 |
| Gun Mount | [@gun_mounts] |
| Carriage | Box Trail |
| Trailers | [@trailers] |
| Gun Shield | [@gun_shield] |
| Armoured Plate | [@armoured_plate] |
| Barrel Length | 1.700mm (L/11.4) |
| Overall Length | 4.30m |
| Width | 2.15m |
| Height | 1.65m |
| Weight | Weight in Traction: 1.825 kg Weight in Action: 1.800 kg |
| Round Weight | HE: IGr. 38 - 38.1 kg AP: IGr. HL 39 - 24.6 kg Smoke: IGr. 38 Nb - 40 kg |
| Muzzle Velocity | HE: 240 m/s AP: 280 m/s |
| Feed | [@feed] |
| Magazine Capacity | [@magazine_capacity] |
| Practical Rate of Fire | [@practical_rate_of_fire] |
| Rate of Fire | 7 r.p.m. |
| Maximum Rate of Fire | [@maximum_rate_of_fire] |
| Maximum Ceiling | [@maximum_ceiling] |
| Maximum Ground Range | [@maximum_ground_range] |
| Maximum Range | 4.700m |
| Armour Penetration | 160mm @ 500m @ 30° |
| Traction | Horse Drawn (Six Horses) & Motorised (Sd.Kfz 10) |
| Variants | [@variants] |
| Notes | The 15cm sIG 33 was a heavy infantry support gun which was issued at regimental level. It was used to supplement the lighter 7.5cm leIG 18 and each infantry regiment had two such weapons. It was very heavy and this caused problems in the field, especially during the Russian winter. Despite its draw backs it was kept in use and used on every front right through the war. |