[1] In an area known as Devil's Den, Johnson, along with J. Levi Roush, John W. Hart, George Mears, Chester S. Furman and Thaddeus S. Smith volunteered to attack a small log cabin being held by Confederate forces.

[1] Although they attempted to approach the cabin by stealth, they were spotted and began taking fire from the enemy force locked inside.

[1] Before they could start shooting the confederate soldiers surrendered and were taken back to Union lines as prisoners.

He is buried at West Laurel Hill Cemetery in Bala Cynwyd, Pennsylvania.

[1] With five other volunteers gallantly charged on a number of the enemy's sharpshooters concealed in a log house, captured them, and brought them into the Union lines.