Imponderable but not inevitable : warfare in the 20th century /

Military history, Modern > 20th century.

Naval history, Modern > 20th century.

Military art and science > History > 20th century.

Naval art and science > History > 20th century.

Military policy > History > 20th century.

Strategy > History > 20th century.

Uncertainty > Political aspects > History > 20th century.