The WW II Atlas includes a utility War Arrow, which allows you to add multiple arrows denoting unit movements to your maps. Non-wargamers might find the useful to add meteorological information to maps, too.
To add a war arrow, click War Arrow
1 Adjust the base size of the arrow by holding down control and moving the mouse.
2 To connect to an existing arrow, press C. Move the cursor around existing arrows then click a point.
3 Click points to shape the war arrow.
4 Right-click to finish.
Click on the image below for more info.