During World War II, the Germans did not widely employ field artillery larger than the 15 cm sFH 18 (150 mm howitzer) for several practical, logistical, and tactical reasons. While the Germans did use very large guns like railway artillery (e.g., the Schwerer Gustav) and siege weapons, these were specialized weapons for specific missions rather than general-purpose field artillery. Here's why Germany limited its larger field artillery:
1. Mobility Challenges
Field artillery needs to be mobile to keep up with rapidly advancing or retreating forces. Larger guns would have been heavier and harder to transport, especially on the challenging terrain of the Eastern Front and in North Africa.
Even the sFH 18 (weighing around 5.5 tons) required heavy towing vehicles, limiting its mobility in muddy, snowy, or poorly developed road conditions.
Larger-caliber guns would have required even more substantial vehicles, which Germany could ill afford due to shortages of trucks and mechanized equipment.
2. Logistical Limitations
Ammunition size and weight: Larger-caliber guns would require significantly heavier and bulkier shells, complicating logistics. Supply lines in Germany were already strained, particularly as the war progressed and fuel and materials became scarce.
Germany preferred standardized calibers (e.g., 105 mm, 150 mm, and 88 mm) to simplify production and supply chains. Introducing larger calibers for general field artillery would have added complexity.
3. Tactical Philosophy
German doctrine emphasized combined arms tactics, where artillery supported infantry and tanks in mobile operations. This required artillery that was:
Quick to deploy and set up.
Mobile enough to follow advancing units.
Larger field guns would have been too slow and cumbersome for these tactics.
For heavier bombardments, Germany relied on airpower (e.g., the Luftwaffe's Stuka dive bombers) rather than larger field artillery. This allowed them to deliver destructive firepower without deploying immobile or impractical heavy guns.
4. Use of Specialized Heavy Artillery
When the Germans needed heavier firepower, they employed specialized weapons like:
Railway artillery: For strategic bombardment and sieges (e.g., the Schwerer Gustav and K5 "Leopold" guns).
Siege mortars: Such as the Karl-Gerät (600 mm mortar) for specific operations, like attacking fortified positions during the siege of Sevastopol.
These weapons were not practical for general field use due to their immense size, slow deployment times, and high maintenance requirements.
5. Production Constraints
Larger artillery pieces are resource-intensive to produce. As the war dragged on, Germany faced mounting shortages of steel, fuel, and other materials, which were prioritized for tanks, aircraft, and smaller, more versatile artillery pieces.
The sFH 18 and smaller guns like the 10.5 cm leFH 18 were easier to mass-produce and met most battlefield needs.
6. Comparison with Other Nations
Even other major powers like the United States, Soviet Union, and Britain rarely used field artillery larger than 150 mm for general purposes. Heavier artillery pieces were typically used as corps-level or army-level assets and were less mobile.