Members of the Swindon GWR Home Guard training at Lydiard Park during World War II.
In the fist picture they are seen operating a Smith Gun which looked very similar to a real field artillery gun. The gun was a 3-inch, smooth bore howitzer with solid metal wheels which was light enough to be towed behind a civilian car. Some people ridiculed the gun at the time, likening it to a toy gun. Apparently it also had a very poor safety record.
In the second view we see young lads being instructed in how to use a rifle.
The third image appears to be a mapping exercise.
The photograph is one of twenty images taken at Lydiard Park by local photographer, Albert Beaney during World War II.