I just realized something stupid I've been doing for years.
Late in the game, when I have wanted to Rush Buy, say, a Freight from scratch (no shields in the production box). I have selected the smallest unit available (Spy at 30 shields), rush built that unit (at 210 gold), then stepped up to a Rifleman (40 shields), rush built that for 25 more gold, then rush built the freight for 25 more gold. Total cost is 260 gold.
It makes sense. Select the smallest unit available and IPRB your way up. It works great early in the game when you still have Warriors and/or Pikemen. So that's the routine I was use to. But, later in the game, it's stupid.
Instead I should have been Rush Buying a Barracks (40 shields at 160 gold). This next part was probably the reason I never even considered this option before. Switch the Barracks to a Spy, losing 50% of your production in the process (down to 20 shields). (Oh no, we can't lose production, that's evil
) Buy the Spy for 25 gold, then continue down the same path as above, Rifleman, then Freight. Total cost is 235 gold.
It's not necessarily a huge amount of gold on it's own, especially when you may be generating 35,000 gold per turn plus whatever you generate from freight deliveries. But, saving 25 gold per city per freight can add up when you have over 200 cities. If only 50 of those cities are rushing Freight that's 1,250 gold saved per turn.
Late in the game, when I have wanted to Rush Buy, say, a Freight from scratch (no shields in the production box). I have selected the smallest unit available (Spy at 30 shields), rush built that unit (at 210 gold), then stepped up to a Rifleman (40 shields), rush built that for 25 more gold, then rush built the freight for 25 more gold. Total cost is 260 gold.
It makes sense. Select the smallest unit available and IPRB your way up. It works great early in the game when you still have Warriors and/or Pikemen. So that's the routine I was use to. But, later in the game, it's stupid.
Instead I should have been Rush Buying a Barracks (40 shields at 160 gold). This next part was probably the reason I never even considered this option before. Switch the Barracks to a Spy, losing 50% of your production in the process (down to 20 shields). (Oh no, we can't lose production, that's evil

It's not necessarily a huge amount of gold on it's own, especially when you may be generating 35,000 gold per turn plus whatever you generate from freight deliveries. But, saving 25 gold per city per freight can add up when you have over 200 cities. If only 50 of those cities are rushing Freight that's 1,250 gold saved per turn.