Extremes of the War Transportation Problem
![image of Private motorist voluntering ambulance work](http://upload.wikimedia.org/wikipedia/commons/thumb/5/50/PSM_V88_D072_Civilian_volunteer_ambulances_in_england.png/1000px-PSM_V88_D072_Civilian_volunteer_ambulances_in_england.png)
Private motorists in Great Britain are giving much of their time to volunteer ambulance work. They have supplied many of their pleasure cars with ambulance trailers as shown in the illustration and are doing useful work in carrying the wounded
![image of soldiers pulling a truck out of the swamp](http://upload.wikimedia.org/wikipedia/commons/thumb/c/c3/PSM_V88_D072_German_soldiers_pulling_trucks_through_mud_in_the_eastern_front_1916.png/1000px-PSM_V88_D072_German_soldiers_pulling_trucks_through_mud_in_the_eastern_front_1916.png)
Military trucks are sometimes mired in the swamps and mud holes near the front, especially on the Russian battlegrounds. Here is a German ammunition truck being pulled through a Polish swamp by a large force of soldiers
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