Clausen received the country's highest award for bravery during combat, the Medal of Honor, for his action during the Battle of Spotsylvania Court House in Virginia on 12 May 1864.

While serving in this capacity he was involved in the Battle of Spotsylvania Court House in Virginia.

On 10 February 1865 he eventually resigned from active service due to his injuries.

[4] Clausen died on 15 August 1922 and his remains are interred at the Mount Peace Cemetery in Philadelphia.

[5] Although severely wounded, he led the regiment against the enemy, under a terrific fire, and saved a battery from capture.