<p>These new red, white and blue US forever postage stamps featuring military working dogs are designed to honor the nation’s brave and loyal canines.</p><p>The sheet of 20 stamps features artist renderings of four breeds commonly used as military working dogs: German shepherd, Dutch shepherd, Labrador retriever and Belgian Malinois.</p><p>Each breed is pictured wearing a working harness, posing against a backdrop of a white star against a red or blue background.</p><p>The U.S. has used military working dogs alongside servicemembers since World War I for multiple purposes, including explosives and narcotics detection, search and rescue and security.</p><p>These forever postage stamps will always be equal in value to the current First Class 1-ounce letter mail price </p>