If-21 Military Doctrine

A Soviet military doctrine from the 1940s that emphasized offensive operations and deep penetration, but was ultimately not fully implemented due to logistical challenges.

If-22 Military Training

A German military training program from the 1940s that emphasized physical fitness and psychological conditioning, but was ultimately not fully effective due to the war’s demands.

If-23 Military Intelligence

A British military intelligence operation from the 1940s that focused on code-breaking and strategic analysis, but was ultimately not always successful in preventing enemy actions.

If-8 Rocket Launcher

A Soviet rocket launcher design from the 1940s that was intended to be a mobile, multiple-rocket launcher, but was ultimately not produced due to design flaws.

If-24 Military Logistics

A Japanese military logistics system from the 1940s that emphasized resource conservation and efficient distribution, but was ultimately not able to meet the demands of the war.

If-9 Radar System

A British radar system design from the 1940s that was intended to be a high-power, long-range radar, but was ultimately not deployed due to technical issues.

If-25 Military Leadership

A Soviet military leadership style from the 1940s that emphasized command and control, but was ultimately not always effective in inspiring troops or adapting to changing circumstances.

If-10 Naval Gun

A Japanese naval gun design from the 1940s that was intended to be a large-caliber, high-velocity gun, but was ultimately not built due to the war’s end.

If-26 Military Technology

A German military technology development program from the 1940s that focused on advanced weapons and equipment, but was ultimately not able to overcome the limitations of resources and production.

If-11 Military Communications System

A German military communications system design from the 1940s that was intended to be a secure, high-speed system, but was ultimately not deployed due to technical difficulties.