Tactics often do not base around the Haubitze 150mm even though it enjoys more firepower than other howitzers. However, the original Haubitze 75mm should still be (and is thus recommended) kept in production to avoid cost and time.
If the user copies Walter Model's defensive doctrine, the Haubitze 150mm, plus a combination of Flak 20's together, this will ultimately prove to be a very strong, incredibly stable mobile defensive position in the long run, especially in the '1942 era'.
The 150mm schwere Feldhaubitze 18 was produced by Rheinmetall and Krupp companies and adopted by the German army in 1935. It was the first artillery weapon equipped with rocket-assisted ammunition to increase range. The 15cm sFH18 was also used in the self-propelled mounting of the Hummel.
By the outbreak of war the Wehrmacht had about 1,353 of these guns in service. Production continued throughout the war, reaching a peak of 2,295 guns in 1944. A total of 5,403 sFH 18 howitzers were produced.
One of the four battalions in each artillery regiment in infantry divisions was equipped with these howitzers.
Numerous experiments were carried out on the 15cm sFH18 to improve its range. These led to the 15 cm sFH18M version with a removable barrel liner and a muzzle brake that allowed a larger "special 7" or 8 charge to be used. The 18M increased range to 15,100 m, but it was found that the liners suffered increased wear and the recoil system could not handle the increased loads in spite of the brake. This led to a more interesting modification, the introduction of the 15cm R. Gr. 19 FES ammunition, which used a rocket-assisted round that could reach 18,200m and give it some level of parity with the Soviet A-19 gun-howitzer.
Finland bought 48 15cm sFH18 howitzers from Germany in 1940 and designated them 150 H/40.
Pros & Cons
Medium cal. HE shell