What can the United States learn from other militaries about how better to prepare for full-spectrum operations - simultaneous offensive, defensive, and stability or civil support operations - and deployments? The authors examine the militaries of China, France, the UK, India, and Israel to identify different approaches to readiness, adaptability, and operational issues, including using subject-matter experts to improve training for specific deployments * using staff training to prepare forces for multiple contingencies; allowing combat training centers to focus on foundational skills; and, preparing units for a specific operational environment prior to deployment. The authors also examine how the United States, France, and the UK prepare for and conduct train, advise, and assist (TAA) missions, finding that the three countries employ significantly different approaches to staff selection, TAA deployments, staff training, and career progression.