Japanese Sailor photos with writing on back from ww2

[Davidmarkwales]

I have several WW2 photos of some Japanese sailors and a samurai school.
On the back of two photos is this Japanese writing
Could someone please translate it into English please
Many thanks

 

[Toritoribe]

the second image
昭和七年七月十五日
セレター軍港
ジョホール町より

戦友古賀ニ？？
July 15, 1932
From Seletar Port, Johor

To my fellow soldier Koga(a surname)

the third one (this picture is upside down)
昭和十五年一月
January, 1940

 

[Davidmarkwales]

the second image
昭和七年七月十五日
セレター軍港
ジョホール町より

戦友古賀ニ？？
July 15, 1932
From Seletar Port, Johor

To my fellow soldier Koga(a surname)

the third one (this picture is upside down)
昭和十tell me anything about this samurai school

the second image
昭和七年七月十五日
セレター軍港
ジョホール町より

戦友古賀ニ？？
July 15, 1932
From Seletar Port, Johor

To my fellow soldier Koga(a surname)

the third one (this picture is upside down)
昭和十五年一月
January, 1940

Thankyou for replying
Can you tell me anything about this samurai school photo

 

[Majestic]

I reckon this is from the 20th century, and depicts some acting club.
Swords out and stabbed in the ground is... a good way to ruin swords.

 

[Uncle Frank]

 

[Toritoribe]

I, too, think it's costume for a festival or something. The swords look like fake swords, and there are girls there.