Loophole with autograph

The outward view through the loophole on the wall between the Nunnatorn and Saunatorn towers. The 1943 autograph is clearly visible in the photograph. Author is has not been established yet, but it can be concluded that in 1943 the fortress was renovated. Apparently, they eliminated the consequences of 1941 fight and hoped for a peaceful future. But ahead of them was the year 1944 ...