noun
blitzkrieg tactics; lightning war strategy
Refers to the rapid, concentrated military offensive strategy, especially associated with German tactics in WWII. Often used in historical or military contexts.
ドイツ軍は電撃作戦でポーランドを短期間で制圧した。
The German army quickly subdued Poland using blitzkrieg tactics.
電撃戦 is a more common and shorter term for 'blitzkrieg', while 電撃作戦 explicitly emphasizes the operational or tactical aspect.
Compound of 電撃 (lightning attack) and 作戦 (military operation). The term is a calque from German 'Blitzkrieg'.