My post was not to show a perfect Sealion but to show how vulnerable London is to certain round 1 buys. Everything is situational including bids as well.
Here is an updated list with changes based upon scramble options for UK
Germany Buys 2 Bombers and saves (6 PU, Buy DD with 9 TTs round 2)
UK 4 inf, 1 mech, 5 AAA, 2 Fighters, French (2 Inf, 1 Fighter)
Transports - 2 inf + tank + art (Assume subs missed DD and TT at New Brunswick)
UK Buy 2 Fighters round 1.
If Germany bombs London for 20 and the AB(Air Base) for 6; UK can purchase 3 inf, 1 art.
Repair AB(air Base) to 2 assume damaged to 6.
Total Defense: 11 inf, 1 mech, 2 art, 1 tank, 5 AAA, 5 Fighters
Total Attack : 10 Inf, 9 Tanks, 1 art, 3 Fighters, 3 Tactical, 4 Bombers.
Sea Battle : 2 Fighter, 2 tactical bomber, DD, CA vs 3 Fighters (100% Germany wins with 3 units)
97% Avg units left for attacker 11 units remaining.
Now lets assume that the 2 subs take out the TT at New Brunswick.
Total Defense: 10 inf, 1 mech, 1 art, 1 tank, 5 AAA, 5 Fighters
Total Attack : 10 Inf, 9 Tanks, 1 art, 3 Fighters, 3 Tactical, 4 Bombers.
Sea Battle : 2 Fighter, 2 tactical bomber, DD, CA vs 3 Fighters (100% Germany wins with 3 units)
99% Avg units left for attacker (13-14) units remaining.
Now lets assume that UK bought 6 inf and a Fighter.
Total Defense: 16 inf, 1 mech, 1 art, 1 tank, 5 AAA, 4 Fighters
Total Attack : 10 Inf, 9 Tanks, 1 art, 5 Fighters, 5 Tactical, 4 Bombers.
87% Avg units left for attacker 8-9 units remaining.
Now lets assume that UK bought 9 inf.
Total Defense: 19 inf, 1 mech, 2 art, 1 tank, 5 AAA, 3 Fighters
Total Attack : 10 Inf, 9 Tanks, 1 art, 5 Fighters, 5 Tactical, 4 Bombers.
77% Avg units left for attacker 6-8 units remaining.
9 inf is still the safest buy to protect London but I think 6 inf and Fighter works too as well as offering more utility with the fighter.
Note All combats are assuming UK will not scramble against Germany’s DD, CA, 2fighters and 2 tactical bombers but if they don’t repair that air base then the odds will be increasing in Germany’s favor for taking London since they can send their planes from the seazone as well. UK will have 4 PUs to buy another artillery but they will have to deal with 4 more planes attacking as well.