1-93. While Army commanders are primarily concerned with command and control in the land domain, command and control occurs in all domains across the range of military operations. Through command and control, Army forces converge effects from all domains (land, air, maritime, space, cyberspace), as well as the information environment and the electromagnetic spectrum, to accomplish missions. Each domain has a unique set of characteristics that influences how capabilities are synchronized and converged throughout an operation. Convergence is the continuous integration of capabilities from multiple domains, the electromagnetic spectrum, and the information environment, to create multiple dilemmas for the enemy. In order to effectively converge effects from all domains, Army forces must understand the authorities, processes, procedures, and time it takes to receive and assess effects from other domains and for Army forces to create effects in those domains.