sometimes it's worthwhile to move via convoy.
An example could be that you have an army in Albania moving to Greece,
your opponent also has a unit moving to Albania from Greece.
If you have a fleet you can convoy to Greece - effectively 'swapping' territories.

Or you can just support the army with that fleet :) Yet support can be cut, while a convoy can be stopped after dislodging the fleet doing it, so it's safer sometimes.

gameID=12198

Here is an example of via convoy being used in a game. Go to Autumn of 2113. Amazon lands an army in Angola, a non-sc province. In Spring of 2114 Congo and Kenya attempt to force disband the army, by moving KIN to ANG supported by LUB.

The army survives by moving ANG to KIN via convoy. Had Amazon moved via land, his army would have been force disbanded, instead he gained control of KIN, which is a supply center.

Had Guaroz supported Ang to Kin rather then convoy, he would have bounced. So in that situation, the order he gave was the one that would lead to the best possible outcome in that situation.

Here is the only other time I have seen the via convoy been applied to a game:
gameID=12
In the Autumn of 1896, Kyushu wanted to take the supply center Usovo, he had 2 units that bordered the territory, however sadly Starr only bordered Usovo via land, and the unit he had stationed in Starr was a fleet.

However, given that Orleans was close to soloing, he couldn't move out of Ibresi or NES without risking losing the stalemate line he was trying to force.

In the Spring of 1897, he convoyed Ibresi to Starr and moved Starr to Ibresi. Now he had 2 units bordering Usovo, allowing him to take the supply center in the Autumn of 1897.

Whoa, going all the way back to game 12 on the site? Pretty cool :D I actually never thought that swapping territories like that was possible, thank you for the explanation Fasces!

I also used this option in this Dark Ages game: gameID=15196 in order to swap an army with a fleet. Check Autumn, 830. All the units in question were my own, but I wanted my army where the fleet was, and the fleet where the army was, so I swapped them.

Excellent, thanks for the info.

DATC test: no. 6.G.1
http://www.vdiplomacy.com/datc.php

Isn't there something that can be used to test full games?