Can a sub go through an un friendly staright?(denmark)

@nubnumber1 just like a fighter unit in A&A is meant to represent many aircraft,think of a destroyer unit representing a group (flotilla I think is the term) of destroyers.Military history has many examples of small,yet determined, forces delaying the progress of larger forces. eg 101st airborne in Bastogne dec 1944

On this line, the old guy could be named:
Axis & Allies 2nd Edition (Classic)
or, to cover all:
Axis & Allies 1st/2nd/3rd Editions (Classic)
Since you don’t see “Classic” anywhere in the box or the manual or anything for real, it fits better between parenthesis (people that don’t know stuff might think it’s not the one, since the one they have is not called “Classic” anywhere, of course).

@Travelman:

… or is there surprise attack capability lost since they are not accompanied by destroyers?

Actually it is the attacker’s destroyer that cancels the defending sub’s surprise strike ability.
A defending destroyer would cancel the attacking sub’s surprise strike ability.

Where are USA planes hitting SZ19 coming from/landing?

All submarines do Convoy Raid Damage, German Submarines do it more effectively.

Germany does 3 CRD
USA, Australia, England (And India), Italy, Japan and Russia do 2 CRD
China does 0 CRD (cannot buy submarines)

It would take 3 Japanese submarines to do 6 dmg to England, but it only takes 2 Germany submarines to do 6 dmg to England.

Thanks for the info

Defending carrier planes are always in the air.  This has been true in all A&A games except the Nova version.

It seems with 6 subs on the board, you could keep 2 off Canada and 4 off London. That means you would subtract 11 IPCs from the UK until the US entered the war, if UK does not build a DD in Canada.

You could keep London at around 18 IPCs until the US enters the war. However, I don’t think Germany can spare the money on sea units, since I believe they need to help Japan gather victory cities or face a long term loss of game. I also suspect that the US will have 2-3 DDs in their war fleet able to clear two of the convoy zones for UK.

Personally I would make air units over sea units, as you can then threaten fleets and land units especially if you need a quick extra “push” against Moscow early on.

You would discourage a navy build by UK until the US could arrive on scene.

In some Europe games, I did produce a couple of subs early on, but not in any global games. I found their life span to be brief unless they hid behind Denmark.