question: How many more men did the UN forces have throughout the course of the battle then they had at the start of the battle?
#1 return the  UN forces 
#2 return men of #1 
#3 return #2 throughout the  course of the     battle  
#4 return #2 at the  start of the     battle  
#5 return number of  #3 
#6 return number of  #4 
#7 return the  difference of #5 and  #6