| nameen = Organize the "31st Squadron (1st gen.)"!
| nameen = Organize the "31st Squadron (1st gen.)"!
| req = ''Organize an anti-submarine patrol using "Isuzu Kai Ni", "Satsuki Kai Ni" and "Uzuki Kai."''
| req = ''Organize an anti-submarine patrol using "Isuzu Kai Ni", "Satsuki Kai Ni" and "Uzuki Kai."''
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*Completion Condition: Have [[Isuzu#Second Upgrade|Isuzu Kai Ni]] ({{lang|ja|五十鈴改二}}), [[Satsuki#Second Upgrade|Satsuki Kai Ni]] ({{lang|ja|皐月改二}}), and [[Uzuki#Upgrade|Uzuki Kai]] ({{lang|ja|卯月改}}) in your fleet
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*Completion Condition: Have [[Isuzu#Second Upgrade|Isuzu Kai Ni]] ({{lang|ja|五十鈴改二}}) (flagship), [[Satsuki#Second Upgrade|Satsuki Kai Ni]] ({{lang|ja|皐月改二}}), and [[Uzuki#Upgrade|Uzuki Kai]] ({{lang|ja|卯月改}}) in your fleet