How do you respond as UK to this german first turn?

The attacker retreats before the defender submerges, in both OOB and LHTR.

This is clearly spelled out in the LHTR rules.  However, since the sequence is never specifically stated in the OOB rules, the general principle that the attacker acts first must be applied.

My style is more ‘tight’ than ‘wild’, but I’ve done:
R1: 1art 4tnk (all in Moscow and Caucasus empty, if Ukraine doesn’t fall to keep Caucasus defensible)
G1: 4inf 7art, also 8inf 4art and the usual 9inf 2art 1tnk

Guess more frequent ‘reactive’ buys don’t count, like:
UK1: 5inf 3tnk (when a large landing threatens)
UK1: 3ftr +US1: 2bmb 4inf (when Germans fleet comes out)
J1: 2 factories (when scattered UK ships are hard to beat fast)

Australian IC is a great idea
and personally i favor it
i can say its my standard move, altough i must say UK play depends( a lot or not ) upon the G1 move

so Australia IC can be put in round 1

even in round 2 if its a surprise

but i agree with Emperor Mollari without USA going forcefully in Pacific, UK forces down there are doomed

and altough this strategy is great, if Australian IC falls to the Japanese, it leads Allies to almost certain defeat, since UK spent a lot of IPC on their fleet here and (partially) egnored European theatre, so overall

i would say anyone go for it

and dont be dissapointed if it fails, even a few times, find a way to improve the strategy, it can be done, but it requires a good coordination, USSR and USA are (very) important here altought it doesnt seem that way on the first look

thats my view upon this…

Jap player could sometimes not do pearl, in tempting US to come to pacific.
All Jap units could be used on mainland J1.
If UK goes all in, those units should be killed, though.
Problem with not doing pearl, is that US may send the pac fleet against Japan, and still build everyhing in EUS.
Pressure on Germany would be the same, the US pac fleet uses 3-4 rnds before it’s in European waters.
If US catches the bait, pressure on Germany will be much weaker.

Except that you are forgetting that Japan will have around $40 IPC aimed at Russia also while the UK and US safely bomb Germany and rely on Russia to fight the ground war.  Which would work… except for those 14 divisions per turn coming at Moscow from the east…

G1 Sea Lion is one of the major reasons why Larry Harris Tournament Rules are used rather than the box rules.

Without reinforcement, WEU falls to the Allies on Turn 2, and barring a re-direction of those massed ARM that HAD been going to Moscow being turned around and heading for Paris instead, the Allis will KEEP WEU for the remainder of the game.

Subs in germany is a terrible idea because US/Brit’s bombers will decimate them. Subs do not fire back at air units!