On April 24, the United States Postal Service will issue two new Forever stamps for the second year of its ongoing commemoration of the Civil War. The 1862 battles of New Orleans (April 24-25) and Antietam (Sept. 17) are featured for this year. The series will continue through 2015.

The Battle of New Orleans stamp is a reproduction of an 1862 colored lithograph by Currier & Ives titled, “The Splendid Naval Triumph on the Mississippi, April 24, 1862,” depicting dark ships, great puffs of white smoke from their canons and bright red sheets of fire as some are hit.

In contrast, the stamp for the Battle of Antietam, also known as the Battle of Sharpsburg, is a reproduction of an 1887 watercolor by Thure de Thilstrup that is done in earth tones with layers of white smoke blanketing most of the scene. There is little color save for the muted green grass in the foreground and an American flag seen off in the distance. It is from a series of prints commissioned by Boston publisher Louis Pang & Co. in the 1880s to commemorate the war.

The stamps will be available in sheets of 12.