The nation’s top Marine, Commandant Gen. David Berger, took to social media Tuesday morning to stress the service’s “most important matters.” A series of eight tweets telegraphed a wide range of areas the officer wants his chain of command to focus on in 2020, which includes a push for more female infantry officers and and examination of the cost of one-year paid maternity leave. Gen. Berger wrote: “While I am aware of the good work already being done across the force in support of my planning guidance implementation, these are some of my most important matters for immediate execution. (1/8)”...