Exercise Resolute Castle is a U.S. Army Europe and Africa led, multinational, joint exercise which marries U.S. Army Reserve and National Guard, as well as allied and partner nation engineering unit training opportunities with the completion of real world construction projects that enhance training capabilities in various areas of Europe's eastern member-states. Resolute Castle supports Atlantic Resolve and is designed to reinforce regional partnerships and promote interoperability with host nation forces by providing improvements to existing infrastructure.