This is the 14821st most frequent Russian word.
победную
"Victorious."
Here 'победную' is an adjective describing 'песню' (song), indicating that the song is associated with victory or celebrating a win.
Команда исполнила победную песню после матча.
The team performed a victory song after the match.
In this sentence, 'победную' describes 'бронзовую книгу' (bronze book), attributing a sense of victory or triumph to the book being discussed.
И занес знамя в победную бронзовую книгу истории.
And carried the banner into the victorious bronze book of history.
'Победную' is describing 'тактику' (tactics), suggesting that these tactics are related to achieving victory.