I cannot comment on the one above, but can say with certainty that dedications do NOT always use correct grammar or abbreviations.

The person doing the dedication is often given a piece of paper with the dedication written on it. He might opine that it would be better said differently, but the decision in the end is up to the person(s) commissioning the dedication.

Case in point: My wife's uncle died a Naval Aviator in 1943. His tombstone has abbreviation and phrasing that was not even correct at the time, but that was what his parents wanted. I have seen similar "not correct" dedications in French and English.

In addition the SA were not renown for scholarship and education so perhaps that is the way they wanted it.

Dave