Germany's increasingly submarine-centred war illustrates the danger of a one-dimensional force. Variety forces an opponent to prepare for several possible threats, while a service that always chooses the same method becomes easier to counter. An air-only force has a similar weakness because its power still depends on vulnerable fuel, ammunition, and transport links. Balanced force structure therefore depends on logistics as well as tactical excellence in any single arm.
Notable Point · 3:03-6:07
Why one-dimensional forces become predictable
A rock-paper-scissors analogy shows why a navy that concentrates on one threat type lets an opponent tailor an increasingly effective counter.