The Defense Department and military seals are protected by law and reserved for official use only. Under U.S. Code Title 18, Section 506, unauthorized use of the seals may include, but is not limited to commercial, marketing, advertising or promotion use by any nongovernment entity and is punishable.
Military services have provided alternatives to their seals for commercial purposes. They include logos or coats of arms. Permission to use any of these emblems must be granted by the respective services. There is no substitute for the Defense Department seal.