The RFU have announced that Exeter head coach Rob Baxter and Saracens defence coach Phil Gustard will join the England staff on the 2013 tour of Argentina.
Baxter and Gustard have been picked to deputise for Graham Rowntree and Andy Farrell as Stuart Lancaster's advisors, with the latter pairing away on British & Irish Lions duty.
Baxter has masterminded the meteoric rise of the Chiefs in the wake of a decade captaining the side, while Gustard has impressed in turning Saracens into one of the meanest defences in the Aviva Premiership.
Lancaster said: "We are delighted to have two quality coaches who have come through the English system for what will be a hugely-significant tour for us and a big thank you should go to Saracens, Exeter and Premiership Rugby for supporting England in this way.
"It was important that we found two coaches who could mirror the skill set of Graham and Andy while they are away and come in and keep developing the players within our system.
"Paul, having worked together with Andy at Saracens, already has a good understanding of how we operate and Rob, who has done a great job in developing a very competitive Exeter pack, will pick up the set piece and breakdown."
Baxter said: "I am delighted to have been asked to be part of Stuart's coaching team. I see it as a fantastic opportunity for me to do what we keep saying to the players here at the club, which is to keep learning, keep doing better and experience new things."
Gustard said: "It's a great honour to be asked to assist in the preparation of the England squad. I am grateful to Saracens for giving me the opportunity to continue my development as a coach at national level."
In addition to Baxter and Gustard, Lancaster will have the expertise of former World Cup winner Mike Catt, who focuses on attacking skills, at his disposal for the four-match, two-Test trip to South America.
Lancaster added: "Both will work alongside Mike Catt as part of our integrated coaching team and we are looking forward to them joining us after their club commitments finish on what is an important tour in our development as a team."