The young midfielder, tipped by many to break into the Royals first team next season, told readingfc.co.uk: "I've played about thirty games for the Republic at various levels, including three friendlies against Germany, so I know what to expect in the friendlies. German players are very good physically and have good technique.
"They're clever players too - they dive a lot to win free kicks."
Diving, or simulation as it is refered to be FIFA, is banned and punishable with a booking. Gamble's claims come on the back of the Irish Senior team's 1-1 draw with the Germans in the World Cup Finals.
Whilst Ireland succumbed to the Spanish on penalties in the second round of the World Cup the Germans went onto reach the final before losing to Brazil.
As the Reading team prepare for their friendly matches it only adds fuel to the intense Germany V Ireland rivalry.
Gamble went on to tell readingfc.co.uk: "They (the Germans) can be too rigid, whereas more flexible teams like Brazil can hurt you more with unexpected things."
"Germany is a very nice part of the world, very quiet and agricultural - which means there's not too much to do. We're here for hard work really and there are going to be some tough training sessions. It's also a good chance to build team spirit, and I'm sure there will be some good banter between the lads."
The twenty-year-old midfielder scored the winner two minutes from time against the Czech's on his Republic of Ireland Under 21 debut. However he is yet to score for the Royals in thirteen appearances.